RF Study.pdfSITESAFE
RF On MPLIANDE EXPERTS
RF EMISSIONS COMPLIANCE REPORT
Crown Castle BUN: 827839
Site Name: SF922 Richwood
Address: 10121 MILLER AVE
Cupertino, CA 95014
2/26/2018
Report Status:
Site Is Compliant
"4r
�O uS BENS ti
uy
m Klaus Bender
E 18131 Registered Professional Engineer (Electrical)
.p. �. State of California, 18131, Expires 2019 -June -30
Date Signed: 2018 -February -27
Prepared By:
Sitesafe, Inc.
200 North Glebe Road, Suite 1000 Arlington, VA 22203 Voice 703-276-1100
Fax 703-276-1169
Engineering Statement in Re:
Electromagnetic Energy Analysis
"SF922 Richwood"
Cupertino, CA 95014
My signature on the cover of this document indicates:
That I am registered as a Professional Engineer in the jurisdiction indicated; and
That I have extensive professional experience in the wireless communications engineering
industry; and
That I am an employee of Sitesafe, Inc. in Arlington, Virginia; and
That I am thoroughly familiar with the Rules and Regulations of the Federal Communications
Commission ("the FCC" and "the FCC Rules") both in general and specifically as they apply to
the FCC's Guidelines for Human Exposure to Radiofrequency Electromagnetic Fields; and
That the technical information serving as the basis for this report was supplied by Crown Castle
(See attached Site Summary and Carrier documents), and the site's installations involve
communications equipment, antennas and associated technical equipment at a location referred to
as the "SF922 Richwood" ("the site"); and
That T -Mobile operates at the site with transmit antennas listed in the carrier summary and with a
maximum effective radiated power as specified and shown on the worksheet, and that worst-case
1.00% duty cycle have been assumed; and
That this analysis has been performed with the assumption that the ground immediately
surrounding the tower is primarily flat or falling; and
That at this time, the FCC requires that certain licensees address specific levels of radio-
frequency energy to which workers or members of the public might possibly be exposed (at
§ 1.1307(b) of the FCC Rules); and
That such consideration of possible exposure of humans to radio-frequency radiation must utilize
the standards set by the FCC, which is the Federal Agency having jurisdiction over
communications facilities; and
That the FCC rules define two tiers of permissible exposure guidelines: 1) "uncontrolled
environments," defined as situations in which persons may not be aware of (the "general public"),
or may not be able to control their exposure to a transmission facility; and (2) "controlled
environments," which defines situations in which persons are aware of their potential for
exposure (industry personnel); and
That this statement specifically addresses the uncontrolled environment (which is more
conservative than the controlled environment) and the limit set forth in the FCC rules for
licensees of T -Mobile's operating frequency as shown on the attached antenna worksheet; and
That it is understood per FCC Guidelines and OET65 Appendix A, that regardless of the existent
radio-frequency environment, only those licenses whose contributions exceed five percent of the
1 of S
SITESAFE
exposure limit pertinent to their operation(s) bear any responsibility for bringing any non-
compliant area(s) into compliance; and
That when applying the uncontrolled environment standards, the cumulative predicted energy
density from the proposed operation is no more than 5.597% of the maximum in any accessible
area up to two meters above the ground per OET-65; and
That the calculations provided in this report are based on data provided by the client and antenna
pattern data supplied by the antenna manufacturer, in accordance with FCC guidelines listed in
OET-65. Horizontal and vertical antenna patterns are combined for modeling purposes to
accurately reflect the energy two meters above ground level where on -axis energy refers to
maximum energy two meters above the ground along the azimuth of the antenna and where area
energy refers to the maximum energy anywhere two meters above the ground regardless of the
antenna azimuth, accounting for cumulative energy from multiple antennas for the carrier and
frequency range indicated; and
That the Occupational Safety and Health Administration has policies in place which address
worker safety in and around communications sites, thus individual companies will be responsible
for their employees' training regarding Radio Frequency Safety.
In summary, it is stated here that the proposed operation at the site would not result in exposure
of the Public to excessive levels of radio-frequency energy as defined in the FCC Rules and
Regulations, specifically 47 CFR 1.1307 and that the site's operation is completely compliant.
Finally, it is stated that access to the tower should be restricted to communication industry
professionals, and approved contractor personnel trained in radio-frequency safety; and that the
instant analysis addresses exposure levels at two meters above ground level and does not address
exposure levels on the tower, or in the immediate proximity of the antennas.
r��7
SITESAFE
SF922 Richwood
Site Summary
Carrier Area Maximum Percentage MPE
T -Mobile
0.457%
T -Mobile
1.616%
T -Mobile
1.616%
T -Mobile
0.818%
T -Mobile
1.09%
Composite Site MPE: 5.597%
3 of 8
SITESAFE
T -Mobile
SF922 Richwood
Carrier Summary
Frequency:
700
MHz
Maximum Permissible Exposure (MPE):
466.67
NW/cmA2
Maximum power density at ground level:
2.1305
pW/cm42
Highest percentage of Maximum Permissible
Exposure:
0.45653
%
On Axis
Area
Max Power
Max Power
Height
Orientation
Density
Percent of
Density
Percent of
Antenna Make Model
feet
degrees true
ERP alts
W/cmA2
MPE
W/cmA2
MPE
RFS APXVF24-C-A20
51
340
571
0.739862
0.158542
1.499948
0.321417
RFS APXVF24-C-A20
51
100
571
0.739862
0.158542
1.499948
0.321417
RFS APXVF24-C-A20
51
220
571
0.739862
0.158542
1.499948
0.321417
01M.
SITESAFE
T -Mobile
SF922 Richwood
Carrier Summary
Frequency:
1975
MHz
Maximum Permissible Exposure (MPE):
1000
pW/cm^2
Maximum power density at ground level:
16.16152
pW/cmA2
Highest percentage of Maximum Permissible Exposure:
1.61615
%
On Axis
Max Power
Height
Orientation
Density
Percent of
Antenna Make Model
(feet) (degrees
true)
ERP (Watts)
(pW/cmA2)
MPE
Ericsson AIR 32 B66Aa B2a
51
340
4317
7.185357
0.718536
Ericsson AIR 32 B66Aa B2a
51
100
4317
7.185357
0.718536
Ericsson AIR 32 B66Aa B2a
51
220
4317
7.185357
0.718536
5 of 8
Max Power
Density Percent of
11.034258 1.103426
11.034258 1.103426
11.034259 1.103426
SITESAFE
T -Mobile
SF922 Richwood
Carrier Summary
Frequency:
2135
MHz
Maximum Permissible Exposure (MPE):
1000
pW/cm"2
Maximum power density at ground level:
16.16152
pW/cmA2
Highest percentage of Maximum Permissible Exposure:
1.61615
%
On Axis
Area
Max Power
Max Power
Height
Orientation
Density
Percent of
Density
Percent of
Antenna Make Model
feet (degrees
true
ERP (Watts)
W/cm^2
MPE
W/cmA2
MPE
Ericsson AIR 32 B66Aa 82a
51
340
4317
7.185357
0.718536
11.034258
1.103426
Ericsson AIR 32 B66Aa 82a
51
100
4317
7.185357
0.718536
11.034258
1.103426
Ericsson AIR 32 B66Aa 82a
51
220
4317
7.185357
0.718536
11.034259
1.103426
SITESAFE
T -Mobile
SF922 Richwood
Carrier Summary
Frequency:
1960
MHz
Maximum Permissible Exposure (MPE):
1000
pW/cmA2
Maximum power density at ground level:
8.17615
pW/cmA2
Highest percentage of Maximum Permissible Exposure:
0.81761
%
Height Orientation
Antenna Make
Ericsson AIR 21 82A B4P 51 340 2184
Ericsson AIR 21 132A B4P 51 100 2184
Ericsson AIR 21 B2A B4P 51 220 2184
7 of 8
On Axis
Max Power I Max Power
Density Percent of
pW/cmA2)
MPE
4.077834
0.407783
4.077834
0.407783
4.077834
0.407783
Density Percent of
uW/cmA2) MPE
5.581158 0.558116
5.581158 0.558116
5.581158 0.558116
SMig-1 i -
p.
T -Mobile
SF922 Richwood
Carrier Summary
Frequency: 1965 MHz
Maximum Permissible Exposure (MPE): 1000 pffl=42
Maximum power density at ground level: 10.90077 pW/cm42
Highest percentage of Maximum Permissible Exposure: 1.09008 %
On Axis Area
Max Power Max Power
Height Orientation Density Percent of Density Percent of
Ericsson AIR 21 B2A B4P 51 340 2911 5.436732 0.543673 7.441024 0.744102
Ericsson AIR 21 B2A B4P 51 100 2911 5.436732 0.543673 7.441023 0.744102
Ericsson AIR 21 B2A B4P 51 220 2911 5.436732 0.543673 7.441024 0.744102
M
SITESAFE